Blue faced man Ching Foo can be seen at Ripley's Believe It or Not in London

See the man who had the blues and couldn't help but show it - one of the world's human Smurfs.

Ching Foo of China was born with a blue face, although the rest of his body was normal.

Being blue-skinned isn't quite as unusual as you might think.

The Fugate family of Kentucky developed a hereditary blue skin condition affecting dozens of kin in the 1800s.

Also watch the video above to see Paul Karason, a modern-day American with a blue colour skin who looks a lot like Papa Smurf.

He started turning blue when he used a silver preparation to treat a skin condition.

The 'Blue-Faced Man' Ching Foo features at the Ripley's Believe It or Not attraction at London's Piccadilly Circus.

It's included here as one of the top 10 weirdest Ripley's London exhibits as chosen by London24 editor Simon Bull. This is number two on the list.

We are counting down through more of the most bizarre sights at the museum this week. See tomorrow for the number one weirdest exhibit at Ripley's.